DCM Written Notice 3/6/2019

APTIM
March 06, 2019
Heather Coats
Beach & Inlet Management Project Coordinator
North Carolina Division of Coastal Management
127 Cardinal Drive
Wilmington, NO 28405
Kenneth Willson
Progrmn M�moger
Apflm Coastal Pimadng & Engineering of North
Carohnq Inc.
4038 Masonboro Loop Road
Wilmington, North Carolina
Tel:[phone]
Kennedr.Willson@aptim corn
Subject Hatteras Inlet Channel Maintenance Project— Written Notice of Project Initiation
Dear Ms. Coats:
The Division of Coastal Management (DCM) issued a CAMA Major Permit for the proposed Hatteras Inlet Channel
Maintenance Project on December 22, 2016 (#129-16). Ths letter serves as written notice of project initiation as
sequined in Condition 7 of the permit Please find attached to this letter revised permit drawings dated March 05,
2019, when provide the location of the proposed channel for the upcoming event
The project includes maintenance dredging within a portion of the Hatteras Inlet Connector Channel, which runs
between the inlet gorge and the ferry channel in proximity to Ocracoke Island. This channel is locally referred to as
the "South Ferry Channel'. The attached plan view drawing shows the location of the proposed channel, the disposal
area, and previously mapped submerged aquatic vegetation (SAV) resources in the vicinity. The channel is proposed
to be dredged by the US Army Corps of Engineers (USACE) side cast dredge Maria. Material dredged from the
channel will be sidecasted to either side of the proposed channel.
Dan County, the USACE, and the NO Division of Water Quality are all moving expeditiously to ensure the project
can start as soon as possible Due to recent weather delays that postponed the necessary conditional surveys used to
develop the plans and cost estimates for the project, the project is xunxilng several weeks behind the ideal schedule
The actual dredging of the channel is anticipated to last approximately 21 days; however, the timing of when the
dredging can begin is dependent on several factors outside of the control of the USACE Navigation Branch. At the
time of this lette, it is anticipated that the project will be conducted between March 15, 2019 and April 15, 2019.
As you are aware, a Major CAMA Permit (#129-16) was issued by the State of North Carolina Division of Coastal
Management (DCM) to Dan County in December 2016 for the maintenance of the connector channel. The permit
was subsequently modified in March 2018. The permit prohibits maintenance activities from April 1 to September 30
without prior approval from the DCM in consultation with appropriate resource agencies. On behalf of Dare County,
we request consideration of 2 weeks of relief for this particular maintenance event In support of the request, we
bring to your attention the fact that no maintenance dredging was required of the channel in 2018 during the dredge
moratorium. Clearly, the channel conditions are highly dependent on weather conditions but Dare County is using
the best available data to maintain the channel in such a way as to minimize the need for dredging wilt= the dredge
moratorium.

The modified permit allows for maintenance of a 200 ft. wide channel to a depth of -12 ft. MLW. Based on the
February 26, 2019 survey, removal of approximately 28,600 cy of material would be required to achieve a channel
depth of-10 ft. MLW within the proposed channel shown on the attached drawings, which includes a 150 foot wide
channel and a 50 foot widener in the area pinched between the two shoals encroaching on the channel.
As required by the permit we have contacted Don Field with NOAA to determine if any updated imagery is available
for the project area to delineate SAV habitat. Mr. Field responded that they do not have any update aerial imagery,
however he indicated that new imagery is expected in May or June of this year. In the CAMA Major Permit DCM
indicated that DMF staff may perform SAV surveys in proximity to the proposed dredge location to provide an
updated determmation of the presence or absence of SAV resources.
Regarding contact information during dredge activities, Brennan Dooley of the USACE will be the point of contact
for the USACE dredging operations. Brennan's Phone Number is [phone] and his email is
Brennan.I.DoolQ:kusace.army.mil. I will be the County's agent and can be contacted via cell phone at (910) 443-
4471.
Please feel free to contact me anytime for further clarification or explanation of the project.
Very truly yours,
APTIM COA TAL PLANNING & ENGINEERING OF NORTH CAROLINA, INC.
Ken Willson
Project Manager
CC:
Robert Outten, Dare County
Ann Daisey, Dare County
Jonathan Howell, NC DCM
Anthony Scarbraugh, NC DWR

HATTERAS INLET MAINTENANCE PROJECT
PAMIrCO SOUND
PROJECT AREA
HATTERAS
HATTERAS
OCRACOKE INLET
ISLAND
ATLANTIC OCEAN
0 7500��ls
GRAPHIC SCALE IN FT
RALEIGH O�NP
CHARLOTTE
N.T.S.
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
CAPE FEAR
DARE COUNTY, NORTH CAROLINA
HATTERAS CAPE
PROJECT LOCATION
REHEAD CRY
LOOKOUT
ATLANTIC
OCEAN
SHEETINDEX
1 COVER SHEET
2 PROJECT OVERVIEW
3 CONNECTOR CHANNEL PLAN VIEW
4 CONNECTOR CHANNEL CROSS SECTIONS
GENERAL NOTES:
1. COORDINATES ARE IN FEET BASED ON NORTH CAROLINA STATE PLANE COORDINATE SYSTEM, NORTH AMERICAN
DATUM 1983, (NAD83).
2. ELEVATIONS ARE REFERENCED TO MLW.
3. DATE OF AERIAL PHOTOGRAPHY: CS-1 AND PV-1 ESRI ]ANUARY 2016, PV-2 NCDOT HATTERAS IMAGE MARCH 2O16.
4. SURVEY DATA COLLECTED BY US ARMY CORPS OF ENGINEERS. FEBRUARY 26, 2019.
5. BATHYMETRIC CONTOURS REPRESENT THE CONDITIONS OF THE CHANNEL ON FEBRUARY 26, 2019 AND SHOULD
NOT BE RELIED ON FOR NAVIGATION PURPOSES.
LEGEND
—••—••— MEAN LOW WATER LINE ®[['
MEAN HIGH WATER LINE
— — — CROSS SECTION LINE
Q HAT-03-V-18 HATTERAS INLET BORINGS 2003 AND ID j
NEARSHORE DISPOSAL AREA
a
� ) SUBMERGED AQUATIC VEGETATION AND 100 FT. BUFFER
i
i
ASBUILT EXISTING CABLE ROUTE (CALDWELL CABLE VENTURES)
EXISTING CABLE ROUTE(UTLTTY ELECTRICAL CONSULTANTS, PC)
ASBUILT NEW CABLE ROUTE
CS-1

PAMLICO SOUND
I��a1 CONNECTOR
CHANNEL CORRIDOR
CHARTED WRECK
AVOIDANCE AREA
—
\ 0
HAT-03-V-6
0
HAT-03-V-7
0
HAT-03-V-90 0
HAT-03-V-8
HAT-03-V-1
HATTERAS'
0 HAT-03-V-11
\ 0 GHAT-03-V-12
j\ HAT-03-V-17 \ HAT-03-V-13
hj 0 HAT-03-V-15 HAT-03-V-14
AT-03-V-18
0 HATTERAS
)_ HAT-03-V-19 \ INLET
i OCRACOKE
-' ISLAND
LIFE SAVING STATION
AVOIDANCE AREA
BREAKING SHOAL J ` PROPOSED
f — / AVOIDANCE AREA CHANNEL
l �J�
NEARSHORE DISPOSAL
LOCATION
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
j .y
0 1�0`2000
GRAPHIC SCALE IN FT
Am
ee
z g'
W LL
W
z
a
z
W
z
IL
e g
a gs�
O a 0?
v °=o
tEY�
a+ 3
LL �3
�I
�I
PV-1
SHEE 2 OF 4

BOTTOM OF CUT/ CHANNEL
COORDINATE TABLE
POINT ID
NORTHING
EASTING
ELEVATION
A
540131.0
2963818.0
-10.0
B
540284.0
2965297.0
-10.0
C
540334.0
2965295.0
-10.0
D
540356.0
2966080.0
-10.0
E
540306.0
2966081.0
-10.0
F
540339.0
2967247.0
-10.0
G
540189.5
2967250.9
-10.0
H
540135.5
2965311.9
-10.0
I
539981.0
1 2963833.0
V V w�
a1n/
[ a� ouow�'.
°O o r�
a o � uo� o0 o°c�
0 1 W'�
m
LIFE SAVING STATION \
AVOIDANCE AREA
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
\ u �6
CHARTED WRECK \ z ��
'z
AVOIDANCE AREA \ W
z
z
\ W
\ 0
200
\ 2200400
�11004
GRAPHIC SCALE IN Ff _
3
ys, tiJ d \ `� I ( \\ IL
L 2f
5 i
1 �1 0 00 Z.
0�osi 0 oa D v d oho
CONNECTOR CHANNEL
✓w� O�Q O `W o -7 o CORRIDOR I
€vQ0D0 �00 4 v m . .� of
= c'
b
HATTERAS
INLET
BREAKING SHOAL
AVOIDANCE AREA
PROPOSED CONNECTOR
CHANNEL

w
w
LL
3
z
O
Q
w
J
W
NOT FOR CONSTRUCTION
FOR REGULATORY REVIEW ONLY
] CROSS SECTION A -A'
B-IJ' C-C'
5
5
'MHW EL. +0.42'
'MLW EL. +0.00'
I I FEBRUARY 26, 2019
.
EXISTING GRADE
5
..... ..... ..... ..... ...
-5
-10
' u
_7m------ --- ------ - -- ---------------'------
-15
TARGET tD EL. = -10.0' MLW
I �.. .... I
-15
CONNECTOR CHANNEL EXTENDS
TO EQUAL DEPTH AT I
MAXIMU M AD EL. _ -12.0' MLW
20
. TIME OF CONSTRUCTION I
I
I
20
-251
-25
CROSS SECTION B-B'
A -A'
5
MHW EL. +0_42'
0 MLW EL. +0.00'
-5 . . .
_10 3 .
I CHANNEL
-15 t WIDTH'150"
DISTANCE ALONG SECTION (FEET)
FEBRUARY 26, 2019
EXISTING GRADE
—.. — 0
.i. . . . . . . . . . + -5
EL' 1�+ -10
J \7 TARGET AD EL. = -10.0' MLW
-15
MAXIMUM AD AD EL. = -12.0' MLW
-20
DISTANCE ALONG SECTION (FEET)
CROSS SECTION C-C'
A -A'
5
5
FEBRUARY 26, 2019
MHW EL. +0.42'
EXISTING GRADE
0
MLW EL. +0.00'
—. 0
w
-5
?�
fL
_ J 1.
3
3 EL. -10.0' MLW
10
_10
Z
O
I
J_15
CHANNEL
WIDTH 200'
-15
W
Ed
TARGET AD EL. = -10.0' MLW
_20
-20
MAXIMUM AD EL. _ -12.0' MLW
-25-
_ _
_
_ _ _
_ -25
DISTANCE ALONG SECTION (FEET)
0 5 10
VERTICAL GRAPHIC SCALE IN FT
0` 250 500
HORIZONTAL GRAPHIC SCALE IN FT
I a„
X
SXEEi 4 O�F4